Question

Please answer these two questions.

A boy fires a pebble using a slingshot. The target is shoulder-high and 30.0 m distant. After several at- tempts he finds that to hit the target, he must aim at a point 4.30 m above the target. What is the speed with which the pebble leaves the slingshot? 4A small plane cruises with an airspeed of 280 km/h. If its destination is due north and a 60.0-km/h wind is blowing from the northeast, what should be the heading of the plane, and what is then its ground speed?

Answer 1

490 r tane4.30 30 3o Θ= 8.IS Range 3om 2 30, 3 2 36 m)s

round reloe Avw 1-42-431 t 231.5Tj mis Gua4243 +237.572 2 41.33m)s tanı 231 : 51,173.87 ground cfeeds ' 42 .43